Patents by Inventor Hujun Xu

Hujun Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for continuously preparing nanoparticles comprising a noble metal or an alloy thereof
    Patent number: 11583925
    Abstract: A method for continuously preparing nanoparticles including a noble metal or an alloy thereof belongs to the technical field of preparation of inorganic nanomaterials. A three-way quartz tube microreactor is designed; noble metal solutions used as raw materials are continuously inputted into the microreactor by injection pumps; and a plasma technology is coupled to form discharge in the microreactor to directly prepare nanoparticles including a noble metal or an alloy thereof. The device and the method have low energy consumption, wide operation range, safety, high efficiency, green and environmental protection. The synthesized nanoparticles have high purity, small size, narrow particle size distribution and adjustable components.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: February 21, 2023
    Assignee: JIANGNAN UNIVERSITY
    Inventors: Liangliang Lin, Xuanhe Li, Hujun Xu
  • METHOD FOR CONTINUOUSLY PREPARING NOBLE METAL AND ALLOY NANOPARTICLES THEREOF
    Publication number: 20220048111
    Abstract: The present invention discloses a method for continuously preparing noble metal and alloy nanoparticles thereof, and belongs to the technical field of preparation of inorganic nanomaterials. A three-way quartz tube microreactor is designed; noble metal solutions used as raw materials are continuously inputted into the microreactor by injection pumps; and a plasma technology is coupled to form discharge in the microreactor to directly prepare noble metal and alloy nanoparticles thereof. The device and the method of the present invention have low energy consumption, wide operation range, safety, high efficiency, green and environmental protection. The synthesized nanoparticles have high purity, small size, narrow particle size distribution and adjustable components.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 17, 2022
    Inventors: Liangliang LIN, Xuanhe LI, Hujun XU
  • Method and system for embedding and extracting image digital watermark
    Patent number: 8615103
    Abstract: The present invention provides a method and a system for embedding and extracting an image digital watermark.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: December 24, 2013
    Assignee: ZTE Corporation
    Inventor: Hujun Xu
  • Method and System for Embedding and Extracting Image Digital Watermark
    Publication number: 20120163652
    Abstract: The present invention provides a method and a system for embedding and extracting an image digital watermark.
    Type: Application
    Filed: June 21, 2010
    Publication date: June 28, 2012
    Applicant: ZTE CORPORATION
    Inventor: Hujun Xu